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<A href="introduction6.htm">Debugging Tools for Windows (WinDbg, KD, CDB, NTSD)</A> &gt; <A href="debugger_reference.htm">Debugger Reference</A> &gt; <A href="debugger_commands.htm">Debugger Commands</A> &gt; <A href="kernel_mode_extensions.htm">Kernel-Mode Extension Commands</A> &gt; </div>
	<div id="winchm_template_title">!poolfind</div>
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	<div id="winchm_template_content"><div id="mainSection"><p>The <b>!poolfind</b> extension finds all instances of a specific pool tag in either nonpaged or paged memory pools.</p>
<pre class="syntax">
    <b>!poolfind </b><i>TagString</i><b> </b>[<i>PoolType</i>] 
<b>!poolfind </b><i>TagValue</i><b> </b>[<i>PoolType</i>] 
</pre>
<h2><a id="ddk__poolfind_dbg"></a><a id="DDK__POOLFIND_DBG"></a>Parameters</h2>
<p></p>
<dl>
<dt><a id="_______TagString______"></a><a id="_______tagstring______"></a><a id="_______TAGSTRING______"></a>       <i>TagString</i>      </dt>
<dd>
<p>Specifies the pool tag. <i>TagString</i> is a case-sensitive ASCII string. The asterisk (*) can be used to represent any number of characters; the question mark (?) can be used to represent exactly one character. Unless an asterisk is used, <i>TagString</i> must be exactly four characters in length.</p>
</dd>
<dt><a id="_______TagValue______"></a><a id="_______tagvalue______"></a><a id="_______TAGVALUE______"></a>       <i>TagValue</i>      </dt>
<dd>
<p>Specifies the pool tag. <i>TagValue</i> must begin with "0x", even if the default radix is 16. If this parameter begins with any other value (including "0X") it will be interpreted as an ASCII tag string.</p>
</dd>
<dt><a id="_______PoolType______"></a><a id="_______pooltype______"></a><a id="_______POOLTYPE______"></a>       <i>PoolType</i>      </dt>
<dd>
<p>Specifies the type of pool to be searched. The following values are permitted:</p>
<p></p>
<dl>
<dt><a id="0"></a>0</dt>
<dd>
<p>Specifies nonpaged memory pool. This is the default.</p>
</dd>
<dt><a id="1"></a>1</dt>
<dd>
<p>Specifies paged memory pool.</p>
</dd>
<dt><a id="2"></a>2</dt>
<dd>
<p>Specifies the special pool.  </p>
</dd>
<dt><a id="4"></a>4</dt>
<dd>
<p>(Windows XP and later)  Specifies the session pool.</p>
</dd>
</dl>
</dd>
</dl>
<h3><a id="DLL"></a><a id="dll"></a>DLL</h3>
<table>
<tr>
<td>
<p><b>
          Windows 2000</b></p>
</td>
<td>
<p>
          Kdextx86.dll
         </p>
</td>
</tr>
<tr>
<td>
<p><b>Windows XP and later
         </b></p>
</td>
<td>
<p>
          Kdexts.dll
         </p>
</td>
</tr>
</table>
<p> </p>
<h3><a id="Additional_Information"></a><a id="additional_information"></a><a id="ADDITIONAL_INFORMATION"></a>Additional Information</h3>
<p>For information about memory pools and pool tags, see the Windows Driver Kit (WDK) documentation and <i>Microsoft Windows Internals</i>, by Mark Russinovich and David Solomon.</p>
<h2>Remarks</h2>
<p>This command can take a significant amount of time to execute, depending on the size of pool memory that must be searched. To speed up this execution, increase the COM port speed with the <a href="#Bookmark2211"><b>CTRL+A (Toggle Baud Rate)</b></a> key, or use the <a href="#Bookmark2065"><b>.cache (Set Cache Size)</b></a> command to increase the cache size (to approximately 10 MB).</p>
<p>The pool tag is the same tag passed to the <b>ExAllocate</b><i>Xxx</i> family of routines.</p>
<p>Here is an example. The entire nonpaged pool is searched and then the paged pool is searched, but the command is terminated before completion (after an hour of operation):</p>
<div class="code"><span codelanguage=""><table>
<tr>
<th></th>
</tr>
<tr>
<td>
<pre>kd&gt; !poolfind SeSd 0

Scanning large pool allocation table for Tag: SeSd (827d1000 : 827e9000)

Searching NonPaged pool (823b1000 : 82800000) for Tag: SeSd

826fa130 size:   c0 previous size:   40  (Allocated) SeSd
82712000 size:   c0 previous size:    0  (Allocated) SeSd
82715940 size:   a0 previous size:   60  (Allocated) SeSd
8271da30 size:   c0 previous size:   10  (Allocated) SeSd
82721c00 size:   10 previous size:   30  (Free)      SeSd
8272b3f0 size:   60 previous size:   30  (Allocated) SeSd
8272d770 size:   60 previous size:   40  (Allocated) SeSd
8272d7d0 size:   a0 previous size:   60  (Allocated) SeSd
8272d960 size:   a0 previous size:   70  (Allocated) SeSd
82736f30 size:   a0 previous size:   10  (Allocated) SeSd
82763840 size:   a0 previous size:   10  (Allocated) SeSd
8278b730 size:  100 previous size:  290  (Allocated) SeSd
8278b830 size:   10 previous size:  100  (Free)      SeSd
82790130 size:   a0 previous size:   20  (Allocated) SeSd
82799180 size:   a0 previous size:   10  (Allocated) SeSd
827c00e0 size:   a0 previous size:   30  (Allocated) SeSd
827c8320 size:   a0 previous size:   60  (Allocated) SeSd
827ca180 size:   a0 previous size:   50  (Allocated) SeSd
827ec140 size:   a0 previous size:   10  (Allocated) SeSd

Searching NonPaged pool (fe7c3000 : ffbe0000) for Tag: SeSd

kd&gt; !poolfind SeSd 1

Scanning large pool allocation table for Tag: SeSd (827d1000 : 827e9000)

Searching Paged pool (e1000000 : e4400000) for Tag: SeSd

e10000b0 size:   d0 previous size:   20  (Allocated) SeSd
e1000260 size:   d0 previous size:   60  (Allocated) SeSd
......
e1221dc0 size:   a0 previous size:   60  (Allocated) SeSd
e1224250 size:   a0 previous size:   30  (Allocated) SeSd

...terminating - searched pool to e1224000
kd&gt; </pre></td></tr></table></span></div></div></div>	
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